Manifold lock



Jan. 15 1924.

. A. BOONE MANIFOLD LOCK Filed Sepc. 8, 1922 14? lm/ewibr A/beri fioone Aflbrmys Patented Jan. 15, 192,4,

ALBERT BOONE, F SAWTELLE, GAIJFORNIA.

MANIFOLD LOCK.-

Application filed September 8, 1922. Serial No. 586,849;

' glnes, and more particularly internal combustion engines of vehicles.

An object of the invention is to provide improved lock controlled and lock actuated valves for the intake manifolds of gasoline engines, so as to prevent unauthorized use of the motor, thereby reducing the probability of theft of the vehicle in which the motor may be installed.

It is an object to provide a lock controlled valve means which may be utilized in combination with an ordinary or usual throttle or may be combined with a primary throttle.

- ther objects and advantages will be made 'manifest in the following specification of an 2 embodiment. of the inventionillustrated in the accompanying drawings, wherein- Figure 1 is another form of the invention;

and

Figure 2 is a cross section on line 4-4 of F1 re 1.

n embodiment of the invention is'f shown in Figures 1 and 2. A look casing or pocket 12 is so disposed that a locking barrel 14 is in such position that the cylinder or stem 13 may register with a socket member 11% formed or provided upon the contiguous end] of the usual throttle rock shaft 5 carrying the valve 6.- In this case, a key 15 is adapted for connection to the operating mechanism 8 to. so that the key becomes nism for o ening and closing the throttle Y valve 6 in t e ordinary manner.

The key 15, of the throttle valve 6 may be connected to the throttle link or mechanism to within claimed.

a part of the mecha- 8 in any suitable manner, preferably detachably, so that the key can be removed from the lock cylinder. A simple fastening means is shown as including a spring latch 16 engaging over the hooked end of the link 8, this being passed through an aperture in an arm 15?; attached to-the key 15. i

In order to lock being picked by the employment of a hair pin or some other similar instrument, I

provide means for rendering the rotation of the cylinder comparatively difiicult so that the employment of relatively fine instruments will be ineffective to rotate the cylinder in efiecting an actuation of the valve 10. This means in the present instance comprises a leaf spring 17 secured to the inher side of the lock casing by means of a screw 18 so that the spring bears against the inner end ofthe cylinder 13 so as to frictionallyhold the cylinder against rotation. It will, of course, be understood that by the employment of the key 15 suflicient force may be exerted to overcome the action of the spring and thereby effect rotation of the cylinder over the valve 10.

Further embodiments, modifications and arrangements of the parts may be resorted the spirit of the invention as the entire removal of the key from the throt-- tle controlling'lock and from the throttle link. i

In testimony whereof I have signed my name to this specification. r ALBERT BOONE.

key controlled look at prevent the possibility of the 

